几种不同杀灭剂对亚历山大藻LC3的灭除研究

为了寻找新型有效的赤潮藻杀灭剂,对辣椒素、过碳酸钠、CuSO4、谷氨酸铜对亚历山大藻LC3的杀灭效果以及表面活性剂对谷氨酸铜杀藻的促进作用进行了研究.辣椒素在较低浓度下(0.1,1.0,10 g/L)对亚历山大藻LC3无明显杀灭作用,达到杀藻的目的所需辣椒素量较大;过碳酸钠对亚历山大藻LC3的杀灭率偏低,这两种物质均不适宜用于赤潮防治.谷氨酸铜可有效杀灭亚历山大藻,其对亚历山大藻LC3的灭杀效率优于CuSO4,优势随时间延长而明显,但其对藻的抑制作用并不随谷氨酸铜的浓度加大而增强.辣椒素、过碳酸钠以及谷氨酸铜用于杀灭亚历山大藻LC3在赤潮防治研究中均为首次报告.HDTMAB可有效促进谷氨酸铜杀灭亚历山大藻LC3,促进作用基本随着HDTMAB浓度的提高而逐步增强.谷氨酸铜和HDTMAB复合剂可有效去除亚历山大藻LC3,在赤潮治理中将具有较好的应用前景.

Study on mitigation of Alexandrium sp. LC3 by use of different algaecides

The removal effects of cpsaicin,sodium percarbonate,cupric sulfate and cupric glutamate on Alexandrium sp.LC3 were studied to find a new effective algaecide.Alexandrium sp.LC3 couldn't be removed under low concentration of cpsaicin(0.1,1.0,10 g/L).The amounts of cpsaicin needed to be effective were much.The survival rate of the algaee was relative high under sodium percarbonat operation,so it was not fit for these two compounds to control the red tide organisms.Cupric glutamate has an excellent ability to extinguish Alexandrium sp.LC3 and was superior to cupric sulfate,the superiority got more obviously as time lasting,but no enhancement with the improvement of cupric glutamate concentration.These three compounds were first used to extinguish Alexandrium especially cupric glutamate that was the first report to use it for control red tide organisms.A preliminary study on the effect of hexadecyltrimethyleamine bromide(HDTMAB) promotion to the mitigation of Alexandrium sp.LC3 by cupric glutamate was carried out.The effect of different concentration of HDTMAB promotion was studied.The results showed that HDTMAB could obviously increase the extinguishments of harmful algae bloom(HAB).There was a positive correlation between concentration of HDTMAB and increase killing effect.Above results indicated the application potential of cupric glutamate and surfactant for red tide prevention as a novel algicide and an accelerant,respectively.